Frequently Asked Questions

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Mounting

What type of bolt pattern does the valve have?

The indu-tech standard Isolation Valve has universal mounting with independent bolting patterns to mount the Isolation Valve to the Tank and the Level Transmitter. The standard valve is provided with one set of threaded holes, one set of thru holes.

Why are there both threaded and through holes on the flanges?

One set of through holes is provided to mount the valve directly onto the tank studs. The threaded holes on the valve are used to mount the Level Transmitter directly to the valve. This ensures that removing of the Level Transmitter from the valve will not disturb the valve mounting on the tank. All hole patterns are ANSI or Metric specifications, depending on application.

Is this valve a narrow body design?

Yes, it is classified as a “Wafer Style Ball Valve“ that requires limited space and yet Bubble Tight shut-off.

How easy is it to mount the valve?

A 3” 150 lb. valve weighs only 16 lbs. and is 7.5” in diameter. A single technician, without lifting gear, even in confined areas, easily mounts this lightweight valve.

What advantage does the indu-tech valve give me in tile chest applications?

The compact size of the valve, along with the ¼ turn handle, greatly reduces the opening requirements for mounting the level transmitter and isolation valve.

Is the valve mounted in such a way that allows removal of the field instrument and complete tank shut-off?

Yes, the mounting flanges are independent from each other.

How easy is it to actuate the valve?

The indu-tech isolation valve has been designed with a 90-degree on/off lever actuator. This ¼ turn of the handle moves the ball from fully open to fully closed. The captured ball seating ensures good performance even in high pressure applications.

Can I mount a quarter-turn actuator on the valve?

No. For safety reasons it is not recommended to actuate the valve in these applications. The valve also has a Handle Lockout to prevent tampering and potential occupational health issues.

I have had valve stems leak and actually blow out of the valve, how is your valve stem designed?

The indu-tech valve has a blow-out proof stem and the elastomeric sealing rings are compatible with your process requirements.

What Pressure Classifications are the valves rated for?

150#, 150#-DS,300# and 600# ANSI Rated.

Is the bolt pattern standard?

Yes, however, it is a universal mount due to the various configurations available in the field.

 Operation

How easy is it to actuate the valve?

The indu-tech isolation valve has been designed with a 90-degree on/off lever actuator. This ¼ turn of the handle moves the ball from fully open to fully closed. The captured ball seating ensures good performance even in high pressure applications.

Does the Valve have any self-cleaning options that allows the removal of product from the valve?

Yes, there are 2 ports on the valve that will allow cleaning on both the process side and the field instrument side.

Can I calibrate my level transmitter in situ?

Yes, the quarter turn valve allows complete bubble tight isolation.

I have highly corrosive process fluids, what metallurgies do you offer?

indu-tech can manufacture the valve in any metallurgy to suit the application. A true “Fit-for-Purpose “ product that meets ANSI Standards.

Can I remove my instrument without draining the tank?

Yes , you have bubble tight shut off.

Is the handle mechanism affected by corrosion?

No. Dual O-ring seals ensures a clean environment for the 1/4 turn actuator to rotate in.

What is Swirl Purge?

Swirl Purge is a multi ported injection system that creates a vortex flow from the isolation valve to the tank. The swirl purge maintains a clean passage between the level transmitter and the tank and ensures optimum Level Transmitter readings.

What is the purpose of the purge on the instrument side of the valve?

The instrument side purge serves three functions. Firstly, it allows instrument technicians to conduct field calibration without removing the level transmitter from the tank. This allows calibration to be done without affecting normal production operations. Secondly, it allows purging to maintain a clean diaphragm environment for the level transmitter and thirdly, it provides instrument side pressure relief in applications such as hydrogen peroxide service.

What is a blowout proof stem?

The stem is designed with a machined shoulder that fits up against a lip in the valve body bore. This prevents the stem from being blown out when there is pressure in the valve body. Our design also eliminates the need for a locking nut to secure the stem to the body.

What if I have a unique application?

The most common Level Transmitter application uses a 3”, 150lb 316SS valve. For more corrosive applications, the indu-tech valve is available in a number of materials including Titanium. As defined in the Model Number Logistics sheet enclosed the indu-tech Isolation Valves are available in size of 2”, 3” and 4”, 150lb, 300lb and 600lb classes as well as a wide variety of materials to suit the specific applications.

Can you lock out the valve?

Yes. The handle is equipped with a locking device to prevent inadvertent actuation of the valve.

Does the valve plug up in high-density media applications?

No. A major design consideration we focused on when we developed the indu-tech isolation valve was to create a valve that did not plug up. The thin cross section of the valve allows for a close fit between instrument and tank therefore reducing the area for process media to build up even in thick stock applications.

What about Black Liquor?

We have installed the Isolation Valve in Black Liquor applications for many years. We have installed the valves on projects with 74% black liquor exposure. A steam purge is added and set on a timer for a regular purge about every second day.


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